Determination of growth and survival rates of larvae and juveniles of the European lobster (Homarus gammarus).


Osman E., Önal U.

9th International Black Sea Coastline Countries Scientific Research Conference. , Ankara, Türkiye, 10 - 11 Ağustos 2023, ss.28, (Özet Bildiri)

  • Yayın Türü: Bildiri / Özet Bildiri
  • Basıldığı Şehir: Ankara
  • Basıldığı Ülke: Türkiye
  • Sayfa Sayıları: ss.28
  • Çanakkale Onsekiz Mart Üniversitesi Adresli: Evet

Özet

The stocks of the European lobster (Homarus gammarus) in Turkish waters have declined considerably during the last two decades.This study aims to develop early culture methods for lobster aquaculture in order to enhance natural lobster stocks in the region. For this purpose, larval culture trials and juvenile growth trials were carried out. Lobster Larvae were cultured in 100-liter cylindro-conical tanks in triplicate with stocking density of 150 larvae per tank. Juvenile lobsters were cultured in plastic containers and were feed with either a mollusk based (M), a crustacean based (C) and a commercial seabass diet (L). A total of 135 juvenile lobsters, 45 for each treatment were used for the juvenile growth trial. At the end of the larval growth experiment, the mean carapace and total length of Stage IV larvae were 5,255±0,052 mm and 13,027±0,486 mm, respectively, with no significant differences within tanks (p>0.05) and the mean survival rate of lobsters was 13.11%. In the juvenile growth trial, the highest carapace length was 1,371±0,023 cm in treatment C followed by 1,251±0,039 cm and 1,187±0,095 cm in treatment M and L, respectively. At the end of 102 days, the mean survival rates of juvenile lobsters were %98.7, %80 and %53.3 in treatments C, M and L, respectively. The most successful diet for juvenile lobsters, with respect to growth and survival, was the crustacean based diet. The findings of this study can be considered as a critical step towards developing lobster restocking programs and aquaculture methods in the future.

Keywords: Lobster Restocking Programs, Lobster Aquaculture, Zoea larvae